Add file forgotten in commit Rev. 162500

[pf3gnuchains/gcc-fork.git] / gcc / calls.c

diff --git a/gcc/calls.c b/gcc/calls.c
index 0489294..cd0d9c5 100644 (file)
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -1672,10 +1672,12 @@ load_register_parameters (struct arg_data *args, int num_actuals,
            {
              rtx mem = validize_mem (args[i].value);
 
-             /* Check for overlap with already clobbered argument area.  */
+             /* Check for overlap with already clobbered argument area,
+                providing that this has non-zero size.  */
              if (is_sibcall
-                 && mem_overlaps_already_clobbered_arg_p (XEXP (args[i].value, 0),
-                                                          size))
+                 && (size == 0
+                     || mem_overlaps_already_clobbered_arg_p 
+                                          (XEXP (args[i].value, 0), size)))
                *sibcall_failure = 1;
 
              /* Handle a BLKmode that needs shifting.  */